Mixing-machine.



A. J. GROPP.

MIXING MACHINE.

APPLICATION FILED SEPT. 17, [1908.

Patented Feb. 151, 1910.

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MIXING MACHINE. APPLIOATION FILED'SBPT. 17, 1908.

Patented Feb. 15, 1910,

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ANlDIlEtE'W'v J. GROPP, OF CHICAGO, ILLINOIS.

MIXING-MACHINE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed September 17, 1908. Serial No. 453,413.

My present invention has relation to improvements in a mixing-inachine,which is more especially lntended for mixing ingredients ormaterials employed for the production of concrete for any'of the usualpur poses thereof, but may be used for thor oughly mixing ingredients ormaterials of various kinds for other purposes; and it consists incertain peculiarities of the construction, novel arrangement, andoperation of the various parts thereof, as will be hereinafter-morefully set forth and specifically claimed.

The principal objects of the invention are to provide a mixing machinewhich shall be simple and inexpensive 111 construct10n,'

strong, durable and efiicient in operation.

Numerous other objects and advantages of the invention will be disclosedin the subjoined description and explanation.

Referring to the accompanying drawings which serve to illustrate theinvention-Figure 1 is'a' view in elevation of the'discharging end of themixer, showing the discharging chute mounted near the mixer and ex- Itended thereinto, and the means for operating said chute; Fig. 2 is asilnila-rview in elevation of the receiving or charging end of themachine; Fig. 3 is a fragmental view in elevation of the central portionof the head of the mixer which is located-at its discharging end,showing a portion of the means employed for. returning to the interiorof the mixer the material which may be spilled from the chute in its actof discharging;

Fig. 4 is an enlarged perspective view of a portion of the inner surfaceof said head,

showing one of the inwardly directed tunnels thereon; Fig. 5 is asimilar View of the outer surface of a portion of said. head, showingone of the inwardly directed deflectors thereon; Fig. 6 is a verticalsectional view taken on line (36 of Fig. 1 looking in the directionindicated by the arrows, showing the discharging chute iii-full lines inabout the position it will occupy when in the act of discharging thematerial and by dotted lines in about the position it will occupy whenarranged to deflect the material inwardly of the mixer; Fig. 7 is a plansectional view taken on line 7-7 of Fig.2 looking in the directionindicated by the arrows; Fig. 8 is a somewhat enlarged sectional view ofa portion of the feeding or charging end of the mixer or drum, showingone set of the means for guiding the material from the receiving orcharging chamber or easing into the mixing receptacle; Fig. 9 is across-sectional view of like partsfliig.

10 is a perspective view of a portion of the head-of the mixingreceptacle at the charging end thereof, showing one of the guide flangesor deflectors secured thereto; Figs. 11 to 15, inclusive, are detailviews of various parts of the machine which will be referred to in thefollowing description.

Like numerals of reference, refer to corresponding parts throughout .thedifferent views of the drawings.

The reference numeral 20 designates the mixing receptacle which is inthe form of a drum or cylinder and may he madeof any suitable size andmaterial, and has circumferentially mounted on its outer surface neareach of its ends a band or circular gear 21 which mesh with gears 22mounted on a driving-shaft 23 which is suitably journaled onasupporting-frame 24 of the ordinary or any preferred construction. andwhich shaft may be driven by any. suitable means. Each of the gear handsor rings 21 is provided with a circular or band-like portion which isadapted to rest on rollers 26 journaled on suitable brackets 26 mountedon. the supcharging end a centrally apertured head 27 and 'at its otheror discharging end a head 28, which is also provided with an opening 29at its center for the reception and operation of the discharging chute30 which extends some distance into the interior of the drum andprojects out *ardly therefrom through the opening 29, as .is clearlyshown in Fig. 6 of the drawings. in which view, as well as in Figs. 2and: 7, it will be seen that the front or' charging end of the mixingreceptacle 20 is provided with a charging chamber or casing 3t whichsurrounds the front portion or end of the mixing receptacle 20 andprojects at 'its front portion some distance in front of the head 27. Asshown the casing 31is-annular when viewed from the front of the machine,but

is substantially U-shaped in cross-section, that is to say, 1t has frontand rear walls 32 and 33, respectively, which areunited at their outeredges by a portion 34, thus forming the annular charging casingindicated as a whole by the reference numeral 31, which. casing asbefore stated surrounds the front portion'of the mixing receptacle andmay be secured thereto in any suitable or-wellknown manner, but in suchaway that the front wall 32 of the casing will be located at a distancein front of the head 27 of the mixing receptacle.

It will be observed by reference to Figs. 2, 6 and 7 that the opening inthe wall 32 of the charging casing is much larger than the centralopening 27 in the head 27 at the charging end of the mixer, thuspermitting the materials tobe readily deposited in the casing 31 betweenthe front wall 32 thereof and the head 27 of the mixing receptacle. I

The drum or receptacle 20 is provided inwardly of its head 27 with aseries of 0 enings 36 which are preferably locate at equal distancesapart and communicate with the channeled charging casing 31, as will bereadily understood by reference to Figs. 2, 6 and 8 of the drawings.Located diagonally of the charging casing and the head 27 of the mixingreceptacle are a series of guiding plates 37 which recede from the Wall32 in a direction opposite to that of the movement of the mixingreceptacle and are joined to the head 27 at or near the front of theopenin s 36 therein.

Extended from the periphery or outer wall 34 of the casing 31 are aseries of inwardly and rearwardly inclined guide lates 38 which aresecured by means of a auge 39 on each of said plates to thehead 27 andhave their rear ends joined to the drum 20 at the rear of the openings36 therein. Thus it will be seen by reference to Figs. 8, 10

and 11 of the drawin 's that the flanges 39 on the plates 38 will formone vertical wallfor said plates while the wall 33 of the chargingcasing will form another wall to each of said plates, thus providinginclined passage ways to guide the material from the casing 3l.to theinterior of the drum or mixing receptacle.

Secured to the inner surface of the receptacle 20 at or near the frontend of each of the openings 36 therein is a deflector which consists ofa tapered plate 40 which is vertically located with respect to the drumat the inner edge of eacl of the openings there in, andis secured to theinner surface of the head 27 at a distance therefrom by means of aplate-or portion 41, thus forming inwardly and rearwardly directedguide-Ways on the inner portion of the mixing receptacle which wayscommunicate with those formed between the wall 32 by the members 38 and39 and located in the casing 31 as .bove described. The members 40 and41 of said deflectors and the head 27 to which the members 41 may bejoined, form tunnel-like'chutesleading from the easing 31 into theinterior of the mixing receptacle and. in the direction opposite itsmovements.

Diagonally disposed from near the head I 27 and partially across theinner surface of the receptacle 20 are a serieof wings 42 which may besecured to the receptacle 20 by means of angle bracltets'43 or otherwiseso as to present their edges inwardlyor substantially radially. As shownin Figs. 6 and 7 these wings are located with their ends adjacent tothehead 27 forwardly of the members 411 of the guide-ways leading from thecasing 31 to the drum-and incline rearward-1y toward the head 28 of themixing receptacle' where they terminate slightly in front of a series ofscoeps 44 which may be of any suitable shape, but preferably like thatshown in the last-named figures of the drawings. Each of these scoops ispreferably made of metal bars havin their ends extended forwardly andtheir mtermediate portions bent rearwardly so that, as the materialpasses from the wings 42 to. said I scoops, it .Will be retained therebyand carried upwardly in the rotation of the mixing receptacle. As shown,they may be secured at their outer edges to the inner surface of thereceptacle 20 by means of angle brackets 45 or otherwise.

Diagonally mounted on each of the dia metrically disposed members 41 isa plate 46 which has substantially the same inclination as the wings 42,and are used for the pur ose of directing the material which mig t passover said wings inwardly from the charging end of the mixing receptacle.

an annular ring 49 which is bolted or otherwise secured to the head 28,and has at its outer edge or portion an inwardly extending flange 50which is spaced from the head 28 as is clearly shown in Figs. 6 and? ofthe drawings.

Diagonally extended across the return easing 48 from its flange 50 tothe head 28 are a series of guide plates 51, which recede from theflange 50 to the rear portion of the openings 47' in the head 28 and maybe secured at their ends to said flange and head by bolts or otherwise.

Located on the inner surface of the head 28 and inwardly of the openings47 therein are a series of rearwardly enlarged and three-sided box-likechutes which present their tapered portions forwardly or in thedirection of the rotation of the mixing receptacle, and have saidtapered ends se- 3 cured forwardly of the opemngs 47 in the of the bars53, two of the diametrically located ones of which are supported neartheir inner ends by means of the brackets 54 at a distance inwardly fromthe wings 42, while the other two of such bars are supported directlyat-or near their inner ends on their respective wings.

Mounted on the main or supportingt'rame 24 near the discharging end ofthe receptacle 20 are two spaced apart uprights 55, each of which isprovided with an arm 56 which extend through the opening 29 of the head28 into the mixing receptacle, and have pivotally mounted thereon andtherebetween the discharging chute 30 which has each of its ends open.Journaled on the upper portion of the uprights and on the upper portionof a standard 57 at the rear and one side of the mixing receptacle is ahorizontal shaft which has on its outer end a crank-handle 59 to turnthe same.

Mounted on the shaft 58 between the uprights 55 is 3 a crank which ispivotally connected at its lower end to a bail 61 secured to the sides lof the chute 30 at a suitable distance from their outer ends.

From the foregoing and by reference to the drawings it will be readilyunderstood and clearly seen that by supplying theingredients ormaterials to be mixed to the charging chamber or casing 31. which may bedone by dumping the material directly from wheel-barrows over the edgeof the wall 32 of said casing or otherwise. it will be caused, in therotation of the drum or mixing receptacle 20, to pass 't'ron". the carsj h1g3] tl'irough the openings 36 by reason of the guides B'Y. 38. 40and 41 into the receptacle 20 or mixer. of the drum or mixer it isapparent that wings 4-2 which, by reason of their inclina- In thefurther rotation T tion, will guide it toward and imo the, scoops 4stwhich will carry it upwardly in batches until they reach a certainpoint, near the top of the receptacle when by rea- 1 son of the gravityof the material it will fall from the scoops 4.4 into the chute 30 whichmay be tilted to the position shown by dotted lines in Fig. 6 by meansof the shaft 58 and connections uniting it with the chute. Most of thematerial falling from the scoops it will be deposited in the chute. andas it is inclined inwardly will fall from its inner end to the lowerportion of the receptacle 20 where it will be acted upon by the bars andwings 42 in such a mannor as to thoroughly mix or interininglc theingredients, at which time the chute 50 may be tilted to the posit-ionshown by continuous lines in Fig. 6,when the same operation asabove-described will take place, except that the mixed material will bedischarged outwardly from the receptacle. As some of the material mayfall over the sides of the chute 30 or pass out of the opening 29 in thehead 28 of'the receptacle. it is apparent that the return casing 48 willcatch the same which, by reason of the guide plates 51, will be causedto pass through the openings 47 and box-like chutes 52 into the interiorof the mixing receptacle. I

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters-Patent, is

1. In a mixer, in combination, a revoluble drum, having openings in itsperiphery at the receiving end thereof, means therein to agitate andmixthe material, a charging casing mounted around and along thereceiving end of the drum and extended substantially the same length asthe openings in the periphery of the drum and extending beyond theperiphery of said drum and having an opening in'its end.

In a mixer, in combination, a revoluble drum, having openings in itsperiphery at the receiving end thereof, means therein to agitate and mixthe mater'al. a charging casing mounted around and fllOl'lg thereceiving end of the drum and extended substantially the same length asthe openings in the periphery of the drum and extei'iding beyond theperiphery of said drum and hav' ing an opening in its end. and means toguide the material inwardly from the casing to the drum, and having itsfront wall extended forwardly and beyond the drum. and means to directthe material inwardly from the casing.

3. In a mixer. in combination. nah-um. having openings in its peripheryat the re- 'cciving end thereof. means therein to agilate and mix thematerial. a continuous series ol ,-ircularly arranged charging thematerial will come in contact with the pockets located at one end ol thedrum, outdrum. a circular head having its periphery contacting with thetops of the pocket walls,

inlets of the pockets outside of said head.

4. In a mixer, in combination, a revoluble drum, having openings in itsperiphery the receiving end thereof, means therein to agitate and mixthe material, a cont-inuous series of circularly arranged rechargingpockets located at the discharging end and the open around the dischargeopening,

inlets of the pockets being turned toward 10 the axis of the drum, andmeans to guide the material to the inlets of the pockets outside of thedischarge opening. 6

' ANDREW J. OROPP.

Witnesses CHAS. C. TILLMAN, M. A. NYMAN.

